Flue gas denitrification. Selective catalytic oxidation of nitric oxide to nitrous oxide

1984 ◽  
Vol 23 (4) ◽  
pp. 808-814 ◽  
Author(s):  
Hans T. Karlsson ◽  
Harvey S. Rosenberg
Keyword(s):  
Nitric Oxide ◽  
Nitrous Oxide ◽  
Catalytic Oxidation ◽  
Flue Gas ◽  
Selective Catalytic Oxidation ◽  
Flue Gas Denitrification

Emissions of nitrous oxide and nitric oxide associated with the decomposition of arable crop residues on a sandy loam soil in Eastern England

Agronomie ◽  
2002 ◽  
Vol 22 (7-8) ◽  
pp. 731-738 ◽  
Author(s):  
Roland Harrison ◽  
Sharon Ellis ◽  
Roy Cross ◽  
James Harrison Hodgson
Keyword(s):  
Nitric Oxide ◽  
Nitrous Oxide ◽  
Crop Residues ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Arable Crop ◽  
Loam Soil

Tangxian Jidong Cement Co., Ltd. SNCR DeNOx Engineering Practice

2013 ◽  
Vol 726-731 ◽  
pp. 2342-2346 ◽  
Author(s):  
Shao Hua Ling ◽  
Chang Yong Jing ◽  
Jing Ma ◽  
Li Juan Zhang
Keyword(s):  
Flue Gas ◽  
Reducing Agent ◽  
Engineering Practice ◽  
System Configuration ◽  
Process Characteristics ◽  
Detailed Explanation ◽  
Actual Operating ◽  
Ammonia Slip ◽  
Flue Gas Denitrification

Tang xian in Hebei Jidong Cement Co., Ltd. flue gas denitrification treatment works, the project uses ammonia as a reducing agent SNCR DeNOx technology. A detailed explanation of the the SNCR process characteristics and system configuration, The analysis for actual operating results of the engineering. The results show: After treatment NOx concentration is less than 200 mg/Nm3, Denitrification efficiency reach 72.82%, Ammonia slip less than 0.9mg/Nm3, Engineering put into operation, About a year reduces emission NOx 1430 tons.

scholarly journals Study on the NO removal efficiency of the lignite pyrolysis coke catalyst by selective catalytic oxidation method

PLoS ONE ◽  
2017 ◽  
Vol 12 (8) ◽  
pp. e0182424 ◽  
Author(s):  
Lei Zhang ◽  
Xin Wen ◽  
Zhenhua Ma ◽  
Lei Zhang ◽  
Xiangling Sha ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Removal Efficiency ◽  
No Removal ◽  
Oxidation Method ◽  
Selective Catalytic Oxidation ◽  
Pyrolysis Coke

H2S selective catalytic oxidation over Ce substituted La1−xCexFeO3 perovskite oxides catalyst

2018 ◽  
Vol 348 ◽  
pp. 831-839 ◽  
Author(s):  
Fenglian Zhang ◽  
Xin Zhang ◽  
Guoxia Jiang ◽  
Na Li ◽  
Zhengping Hao ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Perovskite Oxides ◽  
Selective Catalytic Oxidation

The complete denitrification pathway of the symbiotic, nitrogen-fixing bacterium Bradyrhizobium japonicum

2005 ◽  
Vol 33 (1) ◽  
pp. 141-144 ◽  
Author(s):  
E.J. Bedmar ◽  
E.F. Robles ◽  
M.J. Delgado
Keyword(s):  
Nitric Oxide ◽  
Nitrous Oxide ◽  
Bradyrhizobium Japonicum ◽  
Mutational Analysis ◽  
Control Level ◽  
Gene Clusters ◽  
Alternative Form ◽  
Nitrate Respiration ◽  
Regulatory Cascade ◽  
Denitrification Genes

Denitrification is an alternative form of respiration in which bacteria sequentially reduce nitrate or nitrite to nitrogen gas by the intermediates nitric oxide and nitrous oxide when oxygen concentrations are limiting. In Bradyrhizobium japonicum, the N2-fixing microsymbiont of soya beans, denitrification depends on the napEDABC, nirK, norCBQD, and nosRZDFYLX gene clusters encoding nitrate-, nitrite-, nitric oxide- and nitrous oxide-reductase respectively. Mutational analysis of the B. japonicum nap genes has demonstrated that the periplasmic nitrate reductase is the only enzyme responsible for nitrate respiration in this bacterium. Regulatory studies using transcriptional lacZ fusions to the nirK, norCBQD and nosRZDFYLX promoter region indicated that microaerobic induction of these promoters is dependent on the fixLJ and fixK2 genes whose products form the FixLJ–FixK2 regulatory cascade. Besides FixK2, another protein, nitrite and nitric oxide respiratory regulator, has been shown to be required for N-oxide regulation of the B. japonicum nirK and norCBQD genes. Thus nitrite and nitric oxide respiratory regulator adds to the FixLJ–FixK2 cascade an additional control level which integrates the N-oxide signal that is critical for maximal induction of the B. japonicum denitrification genes. However, the identity of the signalling molecule and the sensing mechanism remains unknown.

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